Faruqi & Faruqi, LLP has announced an investigation into claims on behalf of investors of Five9, a cloud-based contact center software provider. This comes as Jim Cramer, a well-known financial commentator, recommended Five9 as a buy during his 'Lightning Round' segment on CNBC. Cramer emphasized that Five9 is currently undervalued, indicating a positive outlook for the stock. The investigation by Faruqi & Faruqi adds a layer of scrutiny to Five9, which has been highlighted in Cramer's recent discussions alongside other stocks, including AbbVie and MongoDB.